Bleaching powder is a mixture of calcium hydroxide, calcium chloride, and calcium hypochlorite. The main component is calcium hypochlorite, with an effective chlorine content of 30% -38%. Bleaching powder is a white or grayish white powder or particle with a significant chlorine odor, is unstable, has strong moisture absorption, and is easily decomposed by the effects of light, heat, water, and ethanol. Bleaching powder is dissolved in water, and its aqueous solution can make litmus test paper turn blue, then gradually fade and turn white. When encountering carbon dioxide in the air, hypochlorous acid can be released, while when encountering dilute hydrochloric acid, a large amount of chlorine gas is produced.
Bleaching powder is a white powder with a strong chlorine odor, and its main component is calcium hypochlorite. Bleaching powder is mainly used in swimming pools and industrial circulating water. The disinfection of drinking water, disinfection, hygiene and epidemic prevention, and pulp and gauze is widely used.
Bleaching powder itself has certain hazards, such as burning and explosion when exposed to high temperature, water, acid or grease, and increasing its danger when exposed to metal powder. In addition, bleach powder is also a combustion aid, which can promote the combustion of surrounding combustibles and cause fires. Moreover, when bleach powder burns with water, it emits a suffocating odor of chlorine gas, which can cause toxicity to the human body through the upper respiratory tract and skin mucosa. In recent years, such accidents have been common, not only causing huge property losses, but also posing a threat to people's lives.
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